Marine environment and coastal management

[CEST2019_00892] Seasonal variations of water quality and aquatic macrophytes survey based on side scan sonar, in a shallow coastal lagoon (Gialova, SW Peloponnesus, Greece)
by Papakonstantinou M., Papatheodorou G., Christodoulou D. Papastergiadou E.

Gialova lagoon is located in the north-west of Pylos city (Prefecture of Messinia, SW Peloponnesus) and is part of the Ecological Network “Natura 2000”. The aim of the current research is the assessment of the ecological quality of the lagoon using hydroacoustic technique and the monitoring of abiotic and biotic parameters on seasonal basis. Side scan sonar imagery resulted in 6 different lagoon floor acoustic types which correspond to different percentage of vegetation cover.

Session: 20, Room: B, at Fri, 09/06/2019 - 10:00 to 10:15
Oral presentation in Marine environment and coastal management
[CEST2019_00893] Benthic litter density maps through low-cost underwater towed video camera surveys. An integrated approach.
by Fakiris E., Christodoulou D., Kordella S., Geraga M., Papatheodorou G.

The marine environment is the final recipient and digester of litter. Floating and benthic litter constitute the majority of litter items in the marine environment while both remain quite unexploited due to their demand in high-cost and time-consuming surveys. In this paper we propose an integrated approach for assessing in detail the spatial distribution and composition of benthic litter in coastal environments, through the use of underwater towed cameras.

Session: 20, Room: B, at Fri, 09/06/2019 - 10:15 to 10:30
Oral presentation in Marine environment and coastal management
[CEST2019_00781] Development of Continuous, Linear Models for Marine Benthic Macrophytes Description
by Tzouvaras N.P.

The European Water Framework Directive has fostered indicator development, pertinent to biological quality elements, for ecological status assessment of coastal waters. For seaweed communities, the CFR index considers composition, abundance and physiological status, through four constituents (Richness, Opportunistic species, Cover, physiological Status) with arithmetically added scores (integers), summing up in [0, 100] and yielding ecological quality ratio (EQR) values in [0, 1].

Session: 20, Room: B, at Fri, 09/06/2019 - 09:45 to 10:00
Oral presentation in Marine environment and coastal management
[CEST2019_00756] Sustainable musselculture activity in terms of hydrodynamics. The case study of Chalastra basin (NW Gulf of Thessaloniki)
by Savvidis Y., Galinou-Mitsoudi S.

Based on the framework strategic guidelines for marine aquacultures, the musselculture section has to be operated in Areas of Organized Aquaculture Development (AOAD). Chalastra (NW Thessaloniki’s Gulf, Thermaikos) produces the 40% of the national musselculture production using pole and longline systems. Following the legislation, farmers and authorities are in process of reforming the existed units and planning new ones so that the musselculture would remain a sustainable activity in AOAD.

Session: 20, Room: B, at Fri, 09/06/2019 - 09:30 to 09:45
Oral presentation in Marine environment and coastal management
[CEST2019_00713] SeaLoc: A pilot forecasting system providing sea characteristics and other support services on high local resolution
by Kalantzi G., Kotsopoulos S., Panitsidis K., Partozis A., Karystinakis K.

SeaLoc project aims in developing an integrated forecasting system with accompanying services for the Greek seas. Further development, however, can facilitate the whole Mediterranean region. It will provide interaction both with specialists as well as with everyday users through the internet and specialized applications, whose output will be in a format ready to be utilized by relevant target groups. The specialized applications will focus on identified needs of each target group, providing easy-to-comprehend thematic indices alongside the actual forecasts.

Session: 20, Room: B, at Fri, 09/06/2019 - 10:33 to 10:36
Flash presentation in Marine environment and coastal management
[CEST2019_00527] A study of alkali-activated concrete mixes in seawater environments
by Mengasini L., Mavroulidou M., Gunn M.J.

This paper assesses the performance in seawater environment of concrete mixes based on alkali-activated (AA) cements; these are proposed as an alternative to Ordinary Portland Cement (OPC) to address environmental footprint of cement production and to find new uses for waste materials. The proposed AA cements contained an industrial by-product, ground granulated blast furnace slag (GGBS) and a waste material, paper sludge ash (PSA). Mixes were made with fresh water and seawater respectively and were cured either in freshwater or seawater to simulate future exposure environments.

Session: 20, Room: B, at Fri, 09/06/2019 - 09:15 to 09:30
Oral presentation in Marine environment and coastal management
[CEST2019_00490] Plastic Litter Project 2018: exploring the detection of floating plastic litter using drones and satellite images
by Topouzelis K., Papakonstantinou A., Garaba S.P., Doukari M., Chatziantoniou A., Spondilidis S.

Plastic litter has been shown to pose a significant problem in the marine environment and the food chain at all trophic levels. Within the scope of Plastic Project 2018, we investigated the prospective use of imaging technology on airborne and spaceborne platforms in detecting floating plastic litter. Three artificial targets of plastic litter were prepared using PET-1water bottles, LDPE plastic bags and nylon fishing ghost nets. Each target measured 10 m x 10 m fixed by a PVC frame to prevent spillage as well as to make an aggregated target.

Session: 20, Room: B, at Fri, 09/06/2019 - 09:00 to 09:15
Oral presentation in Marine environment and coastal management
[CEST2019_00263] Genetic population structure of scallops going through a rapid population decline in the Eastern Mediterranean
by Metaxatos A., Gazouli M.

Genetic structure of the endemic Pecten jacobaeus of Aegean inferred from mitochondrial 16s DNA sequence analysis was performed. This genetic marker is a powerful tool for measuring genetic variation and gene flow among populations. Valuable scallop stocks were abundant in the past in Euboikos gulf and Aegean but now are severely depleted due to overfishing, pollution and ocean warming. To restock and conserve this bivalve, a better understanding of its genetic variability is essential.

Session: 20, Room: B, at Fri, 09/06/2019 - 10:30 to 10:33
Flash presentation in Marine environment and coastal management